20406815

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{28541}}^1$

素因数の和:28570

約数の個数: 16

約数和(自身を含む): 28770336

約数和(自身を除く): 8363521

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 28541, 142705, 313951, 371033, 1569755, 1855165, 4081363, 20406815]

約数ペア:

[(1, 20406815), (5, 4081363), (11, 1855165), (13, 1569755), (55, 371033), (65, 313951), (143, 142705), (715, 28541)]